linux-kernel - Re: [PATCH 01/11] dma-mapping: remove dmam_free

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20170626070715.GA12711@infradead.org>
Date:   Mon, 26 Jun 2017 00:07:15 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Christoph Hellwig <hch@....de>
Cc:     linux-scsi@...r.kernel.org, linux-serial@...r.kernel.org,
        netdev@...r.kernel.org, linux-metag@...r.kernel.org,
        nios2-dev@...ts.rocketboards.org, linux-fbdev@...r.kernel.org,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        Tejun Heo <tj@...nel.org>
Subject: Re: [PATCH 01/11] dma-mapping: remove dmam_free_noncoherent

Tejun, does this look ok to you?

On Fri, Jun 16, 2017 at 09:17:06AM +0200, Christoph Hellwig wrote:
> This function was never used since it was added.
> 
> Signed-off-by: Christoph Hellwig <hch@....de>
> ---
>  Documentation/driver-model/devres.txt |  1 -
>  drivers/base/dma-mapping.c            | 20 --------------------
>  include/linux/dma-mapping.h           |  2 --
>  3 files changed, 23 deletions(-)
> 
> diff --git a/Documentation/driver-model/devres.txt b/Documentation/driver-model/devres.txt
> index e72587fe477d..9070ff06b558 100644
> --- a/Documentation/driver-model/devres.txt
> +++ b/Documentation/driver-model/devres.txt
> @@ -243,7 +243,6 @@ DMA
>    dmam_alloc_noncoherent()
>    dmam_declare_coherent_memory()
>    dmam_free_coherent()
> -  dmam_free_noncoherent()
>    dmam_pool_create()
>    dmam_pool_destroy()
>  
> diff --git a/drivers/base/dma-mapping.c b/drivers/base/dma-mapping.c
> index f3deb6af42ad..5940c9dace36 100644
> --- a/drivers/base/dma-mapping.c
> +++ b/drivers/base/dma-mapping.c
> @@ -148,26 +148,6 @@ void *dmam_alloc_noncoherent(struct device *dev, size_t size,
>  }
>  EXPORT_SYMBOL(dmam_alloc_noncoherent);
>  
> -/**
> - * dmam_free_coherent - Managed dma_free_noncoherent()
> - * @dev: Device to free noncoherent memory for
> - * @size: Size of allocation
> - * @vaddr: Virtual address of the memory to free
> - * @dma_handle: DMA handle of the memory to free
> - *
> - * Managed dma_free_noncoherent().
> - */
> -void dmam_free_noncoherent(struct device *dev, size_t size, void *vaddr,
> -			   dma_addr_t dma_handle)
> -{
> -	struct dma_devres match_data = { size, vaddr, dma_handle };
> -
> -	dma_free_noncoherent(dev, size, vaddr, dma_handle);
> -	WARN_ON(!devres_destroy(dev, dmam_noncoherent_release, dmam_match,
> -				&match_data));
> -}
> -EXPORT_SYMBOL(dmam_free_noncoherent);
> -
>  #ifdef CONFIG_HAVE_GENERIC_DMA_COHERENT
>  
>  static void dmam_coherent_decl_release(struct device *dev, void *res)
> diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
> index 4f3eecedca2d..830ec5f06a4f 100644
> --- a/include/linux/dma-mapping.h
> +++ b/include/linux/dma-mapping.h
> @@ -749,8 +749,6 @@ extern void dmam_free_coherent(struct device *dev, size_t size, void *vaddr,
>  			       dma_addr_t dma_handle);
>  extern void *dmam_alloc_noncoherent(struct device *dev, size_t size,
>  				    dma_addr_t *dma_handle, gfp_t gfp);
> -extern void dmam_free_noncoherent(struct device *dev, size_t size, void *vaddr,
> -				  dma_addr_t dma_handle);
>  #ifdef CONFIG_HAVE_GENERIC_DMA_COHERENT
>  extern int dmam_declare_coherent_memory(struct device *dev,
>  					phys_addr_t phys_addr,
> -- 
> 2.11.0
> 
---end quoted text---